We present noise measurements made at temperatures down to 200 mK on a tunnel junction d.c. SQUID, to be used for the gravitational-wave experiment Nautilus of the Rome group. We find that the flux noise decreases with temperature, as expected, with a best measured value of phi(n) congruent-to 7.10(-7) phi-0/square-root Hz at 0.2 K. The presence of an excess noise term independent of temperature is discussed.
Titolo: | NOISE MEASUREMENTS ON A TUNNEL JUNCTION DC SQUID FOR A GRAVITATIONAL-RADIATION DETECTOR AT ULTRALOW TEMPERATURE | |
Autori: | ||
Data di pubblicazione: | 1992 | |
Rivista: | ||
Handle: | http://hdl.handle.net/20.500.12571/2772 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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